package realQuestion.shenxin;

import com.sun.org.apache.xpath.internal.operations.String;

import java.util.Scanner;

public class Main1 {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int m = scanner.nextInt();
        String[] zhiwen = new String[m];
        for (int i = 0; i < m; i++) {
//            zhiwen[i]=scanner.nextLine();
        }


    }


}
